activity æk'tiviti
释义
n. 活动, 行动, 活跃, 活力
[计] 活动
英文释义
n. any specific behavior
n. (chemistry) the capacity of a substance to take part in a chemical reaction
词形变化
复数: activities
BNC词频排名: 412 | 当代语料库词频排名: 537